/*
 * Copyright (c) 2011 Anthony Vandikas
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation 
 * files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, 
 * modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software 
 * is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#pragma once

/**
 * Verifies sign-out information.
 */
class AbstractVerifier
{
public:
	/**
	 * Virtual destructor to allow inheritance.
	 */
	virtual ~AbstractVerifier() = 0;

	/**
	 * Verifies sign-out information. Two values are returned: a boolean signifying whether the sign-out
	 * information is valid, and a Student structure corresponding to the username.
	 *
	 * @param username The student's username.
	 * @param password The student's password.
	 * @param item The item to be signed out.
	 */
	virtual std::tuple<bool, Student> verify(const QString &username, const QString &password, const Item &item) const = 0;
};
